Journal ArticleDOI
CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface
Cao-Thang Dinh,Thomas Burdyny,Golam Kibria,Ali Seifitokaldani,Christine M. Gabardo,F. Pelayo García de Arquer,Amirreza Kiani,Jonathan P. Edwards,Phil De Luna,Oleksandr S. Bushuyev,Chengqin Zou,Chengqin Zou,Rafael Quintero-Bermudez,Yuanjie Pang,David Sinton,Edward H. Sargent +15 more
TLDR
A copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE).Abstract:
Carbon dioxide (CO 2 ) electroreduction could provide a useful source of ethylene, but low conversion efficiency, low production rates, and low catalyst stability limit current systems. Here we report that a copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO 2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE). Hydroxide ions on or near the copper surface lower the CO 2 reduction and carbon monoxide (CO)–CO coupling activation energy barriers; as a result, onset of ethylene evolution at −0.165 volts versus an RHE in 10 molar potassium hydroxide occurs almost simultaneously with CO production. Operational stability was enhanced via the introduction of a polymer-based gas diffusion layer that sandwiches the reaction interface between separate hydrophobic and conductive supports, providing constant ethylene selectivity for an initial 150 operating hours.read more
Citations
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Advancements and potentials of molten salt CO2 capture and electrochemical transformation (MSCC-ET) process
TL;DR: In this paper, a short review briefly introduces the principle of the molten salt carbon capture and electrochemical transformation (MSCC-ET) process, its potential of commercialization in terms of process efficiency, product marketing and economy, and finally, the opportunities and challenges in future research and development.
Journal ArticleDOI
Binder-Focused Approaches to Improve the Stability of Cathodes for CO2 Electroreduction
Uzoma O. Nwabara,Anthony D. Hernandez,Danielle A. Henckel,Xinyi Chen,Emiliana R. Cofell,Michiel P. de-Heer,Sumit Verma,Andrew A. Gewirth,Paul J. A. Kenis +8 more
TL;DR: While the use of flow electrolyzers has enabled high selectivity (>80%) and activity (>200 mA cm-2) in the reduction of CO2 to value-added chemicals, the durability of these systems is still insuff...
Journal ArticleDOI
Structure‐Tailored Surface Oxide on Cu–Ga Intermetallics Enhances CO2 Reduction Selectivity to Methanol at Ultralow Potential
Debabrata Bagchi,Jithu Raj,Ajay K. Singh,Arjun Cherevotan,Soumyabrata Roy,Kaja Sai Manoj,Chathakudath P. Vinod,Sebastian C. Peter +7 more
TL;DR: In this paper , an electrochemical CO2 reduction reaction (eCO2RR) was performed on two intermetallic compounds formed by copper and gallium metals (CuGa2 and Cu9Ga4).
Journal ArticleDOI
Factors Influencing the Performance of Copper-Bearing Catalysts in the CO2 Reduction System
TL;DR: In the face of the increasingly serious greenhouse effect and climate warming, carbon dioxide reduction (CO2RR) technology, which can produce valuable chemicals and fuels while consuming CO2, has b...
Journal ArticleDOI
CO2 electroreduction to methane at production rates exceeding 100 mA/cm2
Armin Sedighian Rasouli,Xue Wang,Joshua Wicks,Geonhui Lee,Tao Peng,Fengwang Li,Christopher McCallum,Cao-Thang Dinh,Cao-Thang Dinh,Alexander H. Ip,David Sinton,Edward H. Sargent +11 more
TL;DR: In this paper, the electrochemical reduction of CO2 to methane is a promising method to store intermittent renewable energy, and high selectivity has been reported for high methane selectivity.
References
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Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
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